Stephen o connor



(N Model.)

S. lOCONNORI SEWING MAGHINE.

Patented Aug. 27. 18189.

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Witwen@ '1" UNITED STAT-Es PATENT GFFICE.

STEPHEN ocoNNon,` or Bnmenronfr, CONNECTICUT.

SEWING-MACHINE.

. SPECIFICATION forming part of Letters Patent No. 410,011, dated August 2'?, 1889. Application nea rune 13, 188e. t Renewed Janny 21, 1889. serial No. 297,105. (No model.)

.To all whom it Vmay concern,.-

port, inthe county of Fairfield and State of1 Connecticut, have invented 'certain new and useful Improvements in SewinglMachines; and I do hereby declare `the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertains to makerand usegtrhc .y

` 'being engaged by the lower end of the verti-` same.

The object of my invention is to provide a sewing-machine which is adapted to be driven by the hand of the operator,and which, while it may be very cheaply constructed, will run very easily and will be capable of doing as good Aworlr as many of the high-priced nia-V chines now in use.

In the draw1ngs, Figure 1 is a side elevai tion of my improved machine, partly in sec-A tion. Fig. 2. is a bottom view of the same. Fig. 3 is a front end view, and Fig. Il is a detail view of the mechanism for operatin g the shuttle and feed levers. t

1 Ad enotes the bed-plate of the machine, and B the bracket-arm secured to or formed integral With the said plate, said arm and plate I l, jection l extending across the said slot;` The being preferably of east metal, as is usual.

C is a driving gear-Wheel,whichturns on a stud fixed to the upright portion of the arm and is provided with a handle d, said driv.v ing-gear meshing with a smaller gear-wheel e on the rear end of the main shaft E, journaled in the upper part of the arm, and carrying at its front end a disk e', having a pin WorkingV in an ordinary heart-cam f, `secured to the needle-bar F. The shaft E carries two eceentrics e2 e3, working in offsets or inwardlyupper ends of said levers are arranged so that 5o theyboth extend inwardly from opposite sides of the machine to embrace their eccentrics. This construction and arrangement of the said yokes permits the said levers to be` pivoted to the opposite outer sides of the vertical portion of the arm, so that they will? not be interfered with by the said diaphragm."

I is the shuttle-lever, pivoted to aprojection a on the under side of the bed-plateA, and provided at its front end with t-he'shuttleearrier t', the rear end of the said lever 6o cal lever G.

The vert-ical lever" II is connectedlat its lower end with the feed-lever J, pivoted to a projection a on the lower side of thel bed-615 thel feed movement. k

To provide for a proper adjustment ofthe '7,5 feed, theslot A7c may be lengthened or shortened by the adjusting-bar L, having a probar L is loosely attached to the feed-barby screws passing throughslots in the forineij- 8o bar, said slots permitting adjustment of the bar L by the screw Z2, tapped through anjoifset portion at the rear end thereof, andabutting against the feed-bar K. A spring7c4,"at tached to the bars K and L, serves to hold the bar L in any position to which it may be adjusted, with the screw Z2 against the bar L. t

M is the take-up or thread-controlling lever, pivoted to the face-plate B', and operated by a pin f on the needle-bar and a coacting 9o spring m, a stop-pin b' on the said face-plate serving to limit the take-up movement of the said lever. To give the proper timing to the lever M, so that it will `yield the thread as may be required by the stitch-forming devices, it is provided with two cam portions m and m2, formed by two bends in the upper side of. said lever, against which the pin f impinges as the needle-bar descends. `The needle-thread passes from th e spool Nthrough :oc

the tension device O to a guide-eye h2, and thence through an eye f2 in the top of the needle-bar, whence it runs through a guideeye b3 and loop bito the hook of the take-up lever, and thence back through the loop h4 and to the needle.

The tension device O consists, preferably, of a tension-plate o, bearing against a smoothfaced projection b2, cast on the top of the arm B, said plate being secured in place by an adjusting-screw o', thread-eyes 02 being provided at the opposite ends of the plate o to guide the thread.

rThe presser-foot p is attached Aby a screw to the presser-bar P, and is pressed against the work bya spring p2. An ordinary liftinglever maybe employed for raising thepresserfoot.

The bed-plate may be provided with legs a2 to enable the machine to stand on a table, or said plate may have an ordinary clamping device for securing the machine 4to a table.

The operation of my machineis as follows: .The driving gear-wheel being set in motion, the needle-bar will be reciprocated in the usual manner, with a dip at the lower end of its stroke to give the shuttle time to pass through the loops of needle-thread. The vertical levers G and H, operated by their respective eccentrics, will in turn impart vibratory motion to the shuttle and feed levers,

the former carrying the shuttle back and forth, as is usual in machines having similar shuttle-operating mechanisms. The feed-lever working in the inclined slot 7c in the feedbar first tilts the latter to lift the feed-dog against the work, and when the said lever has reached the end of said slot the bar is moved forward on its supporting fulcrum pin or screw 7c', the tilting of said bar on said pin bringing the inclined slot k2 to a horizontal position, so that the feeding movement of said bar will be truly horizontal. When the feeding movement is effected, the return movementV of the feed-bar first causes the feed-dog to descend and the feed-bar is then returned to its first position. Thus a fourmotioned feed, with all of the movements positive, is secured. The feed-lever has a uniform vibrating movement, and the throw of the feed-bar is varied by changing the position of the adjusting-bar L by the screw Z2 to lengthen or shorten the slot k, the feeding' movements being increased as the said slot is shortened and decreased as the said slot is lengthened, to give more lost horizontal motion to the feed-lever in the said slot. As the needle-bar descends the pin f', carried thereby, operates the take-up lever to slacken the thread, and as the said bar rises the spring m swings the said lever away 'from the loop b4 and the stitch is tighten ed by the combined action of the take-up or thread-controlling lever and the take-up eye in the top of the needle-bar through which the thread passes. The projections a and a beneath the bed-plate are of different lengths, so that the shuttle and feed levers pivoted thereto vibrate in different horizontal planes, and do not therefore interfere with-each other.

Having described my invention, what I claim is- 1. In a sewing-machine, the combination, with a bracket-arm the vertical portion of which is provided with a strengthening rib or diaphragm, of the main shaft journaled in the upper part of said arm, the eccentrics thereon, the vertical levers pivoted on either side of said diaphragm and having oppositelyarranged inwardly-extending yokes embracing said eccentrics, and the shuttle and feed levers operated by said vertical levers, sub stantially as set forth.

2. In a sewing-machine, the combination, with a bracket-arm the vertical portion of which is provided with a strengthening rib or diaphragm, of the main shaft j ournaled in the upper part of saidarm and provided with a needle-bar-operating crank-disk, two eccentrics, and a gear-wheel, a needle-bar adapted to receive motion from said crank-disk, two vertical levers pivoted, one on either side of said diaphragm and having inwardly-extending yokes embracing said eccentrics, the shuttle and feed levers operated by said vertical levers, and a driving gear-wheel meshing with the said gear-Wheel on the main shaft, substantially as set forth.

3. In a feed mechanism for sewing-machines, the combination of a feed-bar-operat' ing lever vibrating in a horizontal plane, means, substantially as described, for imparting the vibrations to said lever from the driving-shaft, and a feed-bar sliding upon a fixed fulcrum between the feed-dog and the inclined slot in which said operating-lever works, as described.

4. In a sewing-machine, the combination of a feed-bar having an inclined slot sliding upon a fixed fulcrum between the feed-dog and said slot, anv adjusting-bar carried by said feed-bar having a projection for shortening and lengthening said slot, an adjustingscrew for fixing said adjusting-bar in the desired position, a vibrating feed-bar-operating lever working in said slot, and means, substantially as described, for imparting the vibratory movements to said feed-bar-operating lever, as set forth.

5. In a sewing-machine, the combination of a feed-bar pivoted near its center and having an inclined slot through which its pivotpin passes, and a second inclined slot, a vibrating feed-bar-operating lever working in said second inclined slot, and means, substantially as described, for imparting the vibra- TOO IOS

IIO

tory movement to the said lever, as specified.

6. In a sewing-machine, the combination, with a pivoted and sliding feed-bar having an inclined slot, of an adjusting-bar loosely Irl attached to said feed-bar and having a pro- In testimony whereof Iafx my signature in j ection extending across said'slot, and an offpresence of two Witnesses. set, an adjusting-screw tapped through said offset and abutting against said feed-bar, a STEPHEN OCONNOR.

s 5 spring for holding said screw in contact with Y said feed-bar, and a vibrating feed -lever Witnesses:

Working in said inclined slot, substantially ADIN MAYO BARBER, as described. EDWD. B; PEARSALL. 

